采用测试向量合并的多扫描链嫁接测试
收稿日期: 2010-04-07
修回日期: 2010-07-05
网络出版日期: 2011-01-25
基金资助
教育部博士点基金(No. 200803590006); 安徽省海外高层次人才基金(No.2008Z014); 安徽省高校省级自然科学研究基金:(No.KJ2010B428, No.2008jq1176, No.KJ2010A280)资助
Test of Multiple Scan Chain Grafting Using Test Vector Merging
Received date: 2010-04-07
Revised date: 2010-07-05
Online published: 2011-01-25
刘杰1;2, 梁华国1, 易茂祥1 . 采用测试向量合并的多扫描链嫁接测试[J]. 应用科学学报, 2011 , 29(1) : 78 -82 . DOI: 10.3969/j.issn.0255-8297.2011.01.014
Although multiple scan chains can effectively decrease test time and reduce the test data, it requires more input channels so that the test cost is increased. To solve the problem, a grafting mechanism with multiple scan chains is proposed, which generates base vectors using a dislocation method in order to merge as many driving ends as possible based on correlation in the test vector. Experimental results show that the proposed
scheme uses fewer channels for the test data input and provides a higher compression ratio while maintaining high-speed testing for multiple scan chains.
Key words: code compression; test vector; scan chain; linear feedback shift register; grafting
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